An example of Nairn’s Linoleum Calculator made from Linoleum and card, mildly stained and scuffed. Made for British Empire Exhibition, 1924, otherwise in good condition
An Imperial Duplex Exposure meter No. 2 for dull light, in good condition in original case with instructions for Bright light and dull light, with a packet of sensitive paper.
Wellcome’s Medical Diary for 1928, contains pharmacopeia, diseases and treatment, poisoning symptoms and treatment, two pages of engagements written on, apart from that in good condition, with cod liver oil advert bookmark.
Ask the Dealer
Fletcher Wallis sells objects and books relating to the history of science, medicine and technology from his unit at Admiral Vernon Arcade Portobello Road. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for thirty five years.